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Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Add 3 additional facts about John Muir

### Input:
John Muir was a naturalist, author, environmental philosopher, glaciologist, and early advocate of preserving wilderness in the United States.

### Response:
assistant
- He was influential in the creation of several national parks in the US, such as Yosemite National Park.
- He founded the Sierra Club, an environmental advocacy organization dedicated to protecting the environment.
- He wrote several books about the natural world, including My First Summer in the Sierra and The Mountains of California.
- He was a strong believer in the intrinsic value of the natural world and advocated for its preservation.
- He undertook a 1,000-mile walk from Indiana to Florida in 1867, giving him a deep appreciation for the beauty of nature.
- He was the first to study and discover the process of glaciation in the Sierra Nevada.